WO2023080454A1 - Module de batterie et batterie le comprenant - Google Patents

Module de batterie et batterie le comprenant Download PDF

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Publication number
WO2023080454A1
WO2023080454A1 PCT/KR2022/014711 KR2022014711W WO2023080454A1 WO 2023080454 A1 WO2023080454 A1 WO 2023080454A1 KR 2022014711 W KR2022014711 W KR 2022014711W WO 2023080454 A1 WO2023080454 A1 WO 2023080454A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
battery cell
fire extinguishing
module
extinguishing member
Prior art date
Application number
PCT/KR2022/014711
Other languages
English (en)
Korean (ko)
Inventor
조현영
김용일
Original Assignee
주식회사 엘지에너지솔루션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지에너지솔루션 filed Critical 주식회사 엘지에너지솔루션
Priority to JP2023540605A priority Critical patent/JP2024502968A/ja
Priority to CN202280008859.XA priority patent/CN116802903A/zh
Priority to EP22890189.8A priority patent/EP4246686A1/fr
Publication of WO2023080454A1 publication Critical patent/WO2023080454A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery module and a battery pack including the same, and more particularly, to a battery module and battery pack with improved safety.
  • secondary batteries capable of charging and discharging are a solution to air pollution, such as existing gasoline vehicles using fossil fuels, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles ( P-HEV), etc., the need for development of secondary batteries is increasing.
  • a lithium secondary battery mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
  • a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are disposed with a separator therebetween, and a battery case in which the electrode assembly is sealed and housed together with an electrolyte solution.
  • lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of an exterior material.
  • a battery module electrically connecting multiple battery cells this is used In such a battery module, capacity and output are improved by forming a battery cell stack in which a plurality of battery cells are connected in series or parallel to each other.
  • one or more battery modules may be mounted together with various control and protection systems such as a battery management system (BMS) and a cooling system to form a battery pack.
  • BMS battery management system
  • the performance of the secondary battery may deteriorate, and in severe cases, there is a risk of explosion or ignition.
  • a thermal runaway phenomenon occurs in a specific battery cell of a secondary battery, propagation to adjacent battery cells becomes very fast.
  • it is very important to prevent thermal runaway and to suppress and delay the propagation of thermal runaway.
  • FIG. 1 is a view showing a battery cell and an adhesive member included in a conventional battery module.
  • the battery cell laminate includes battery cells 11 and adhesive members 50a and 50b interposed between the battery cells 11 adjacent to each other.
  • the adhesive members 50a and 50b include a detachable adhesive member 50a or an overall adhesive member 50b depending on their shape.
  • the battery cells 11 are attached to each other through adhesive members 50a and 50b such as double-sided tape between the battery cells 11 to form a battery cell stack.
  • adhesive members 50a and 50b such as double-sided tape between the battery cells 11 to form a battery cell stack.
  • the adhesive members 50a and 50b do not cover the upper and lower portions of the battery cell 11, especially when a thermal runaway phenomenon occurs, heat and flame are easily transferred to the adjacent battery cell 11.
  • An object to be solved by the present invention is to provide a battery module that prevents the propagation of thermal runaway between battery cells or effectively delays the propagation of thermal runaway when thermal runaway occurs, and a battery pack including the same.
  • a battery module includes a battery cell laminate in which a plurality of battery cells are stacked; a module frame surrounding the battery cell stack; And a fire extinguishing member interposed between the battery cells, the battery cells include a first battery cell and a second battery cell adjacent to each other, the fire extinguishing member is a top surface of the first battery cell, the first battery A space between the cell and the second battery cell and a lower surface of the second battery cell are surrounded in a zigzag shape.
  • the fire extinguishing member may include a fire extinguishing agent; And it may include a case accommodating the fire extinguishing agent.
  • the case is melted when a high temperature occurs inside the battery module, and the extinguishing agent contained in the case may be discharged to the outside of the case.
  • the fire extinguishing member may have double-sided adhesiveness.
  • the case may have double-sided adhesiveness.
  • the fire extinguishing member may contact the upper part of the module frame and the lower part of the module frame.
  • the fire extinguishing member of the battery module according to another embodiment of the present invention may contact the upper surface of the first battery cell and the lower surface of the second battery cell.
  • the fire extinguishing member may bond the upper surface of the module frame to the upper surface of the first battery cell, and bond the lower surface of the module frame to the lower surface of the second battery cell.
  • the extinguishing member may adhere the first battery cell and the second battery cell to each other.
  • the extinguishing member may be interposed between the side portion of the module frame and the outermost battery cell.
  • the fire extinguishing member may bond the side surface of the module frame and the outermost battery cell.
  • a battery pack according to another embodiment of the present invention may include the battery module described above.
  • a fire extinguishing member is interposed between a pair of battery cells adjacent to each other in a battery cell stack, and the fire extinguishing member is formed to surround the battery cells in a zigzag form, When runaway occurs, propagation of thermal runaway between battery cells may be prevented or propagation of thermal runaway may be effectively delayed.
  • FIG. 1 is a view showing a battery cell and an adhesive member included in a conventional battery module.
  • FIG. 2 is a perspective view showing a battery module according to an embodiment of the present invention.
  • FIG. 3 is a perspective view illustrating a battery cell included in the battery module of FIG. 2 .
  • FIG. 4 is a view showing a cross section cut along the cutting line a-a′ of FIG. 2 .
  • FIG. 5 is a view showing a battery module according to another embodiment of the present invention.
  • FIG. 6 is a perspective view showing a portion of a battery cell laminate included in the battery module of FIG. 5 .
  • a part such as a layer, film, region, plate, etc.
  • another part is in the middle.
  • a part is said to be “directly on” another part, it means that there is no other part in between.
  • a reference part means to be located above or below the reference part, and to necessarily be located “above” or "on” in the opposite direction of gravity does not mean no.
  • planar image it means when the target part is viewed from above, and when it is referred to as “cross-sectional image”, it means when a cross section of the target part cut vertically is viewed from the side.
  • FIG. 2 is a perspective view showing a battery module according to an embodiment of the present invention.
  • 3 is a perspective view illustrating a battery cell included in the battery module of FIG. 2 .
  • FIG. 4 is a view showing a cross section cut along the cutting line a-a′ of FIG. 2 .
  • the battery module 100 includes a battery cell stack 120 in which a plurality of battery cells 110 are stacked and a module frame surrounding the battery cell stack 120. (200).
  • the battery cell 110 is preferably a pouch-type battery cell, and may be formed in a rectangular sheet-like structure.
  • two electrode leads 111 and 112 are opposed to each other so that one end 114a and the other end of the cell body 113 ( 114b) have structures protruding from each other. That is, the battery cell 110 includes electrode leads 111 and 112 protruding in opposite directions. More specifically, the electrode leads 111 and 112 are connected to an electrode assembly (not shown) and protrude from the electrode assembly (not shown) to the outside of the battery cell 110 .
  • both ends 114a and 114b of the cell case 114 and one side portion 114c connecting them are bonded while the electrode assembly (not shown) is accommodated in the cell case 114.
  • the battery cell 110 has a total of three sealing parts 114sa, 114sb, and 114sc, and the sealing parts 114sa, 114sb, and 114sc are sealed by a method such as thermal fusion.
  • the other side may be made of the connecting portion 115.
  • the cell case 114 may be made of a laminated sheet including a resin layer and a metal layer.
  • the connecting portion 115 may extend along one edge of the battery cell 110 , and a bat ear 110p may be formed at an end of the connecting portion 115 .
  • the terrace portion 116 may be formed between the electrode leads 111 and 112 and the cell body 113. That is, the battery cell 110 may include a terrace portion 116 extending from the cell case 114 in a direction in which the electrode leads 111 and 112 protrude.
  • the battery cells 110 may be configured in plurality, and the plurality of battery cells 110 are stacked so as to be electrically connected to each other to form the battery cell stack 120 .
  • a plurality of battery cells 110 may be stacked along a direction parallel to the x-axis. Accordingly, the electrode leads 111 and 112 may protrude in the y-axis direction and the -y-axis direction, respectively.
  • the module frame 200 may be a mono frame surrounding the battery cell stack 120 except for front and rear surfaces.
  • the module frame 200 is not limited thereto, and an L-shaped frame or a U-shaped frame covering the lower and both sides of the battery cell stack 120 with its top, front and rear surfaces open, and the battery cell stack 120 ) It may include a frame shape including an upper plate covering the top.
  • the battery cell stack 120 accommodated inside the module frame 200 may be physically protected through the module frame 200 .
  • the module frame 200 may include a lower portion 200a of the module frame 200, a side portion 200b of the module frame 200, and an upper portion 200c of the module frame 200.
  • the end plate 150 may cover the front and rear surfaces of the battery cell stack 120 that is open from the module frame 200 .
  • the end plate 150 may be coupled to front and rear edges of the module frame 200 through welding.
  • a bus bar frame (not shown) may be formed between the end plate 150 and the front and rear surfaces of the battery cell stack 120 .
  • a plurality of bus bars mounted on the bus bar frame may protrude from the battery cells 110 and contact electrode leads 111 and 112 mounted on the bus bar frame.
  • the battery module 100 further includes a thermally conductive resin layer 310 positioned between the lower surface of the battery cell stack 120 and the lower portion 200c of the module frame 200, The conductive resin layer 310 may serve to transfer heat generated from the battery cell 110 to the bottom of the battery module 100 .
  • the battery module 100 includes a fire extinguishing member 300 interposed between the battery cells 110 .
  • the battery cell 110 includes a first battery cell 110a and a second battery cell 110b adjacent to each other.
  • the second battery cell 110b may be next to the first battery cell 110a. Therefore, the first battery cell 110a and the second battery cell 110b may be alternately formed.
  • the fire extinguishing member 300 is a top surface of the first battery cell 110a, a space between the first battery cell 110a and the second battery cell 110b, and the second battery cell 110b. ) is wrapped in a zigzag pattern. That is, the fire extinguishing member 300 may cover the upper surface of the first battery cell 110a and the lower surface of the second battery cell 110b, and the space between the first battery cell 110a and the second battery cell 110b. It may be formed to surround the. In particular, since the first battery cell 110a and the second battery cell 110b may be alternately formed, the fire extinguishing member 300 may include the alternately formed first battery cell 110a and the second battery cell 110b. Each space between them can be wrapped.
  • the fire extinguishing member 300 may include a fire extinguishing agent and a case accommodating the fire extinguishing agent. What is shown as the fire extinguishing member 300 in FIG. 4 may be an illustration of the case. Thus, the fire extinguishing agent may be formed inside the case of the fire extinguishing member 300 .
  • the case is melted when a high temperature occurs inside the battery module 100 and the battery cell 110, and the fire extinguishing agent contained in the case may be discharged to the outside of the case.
  • the case may be melted when thermal runaway occurs inside the battery module 100 .
  • the fire extinguishing agent discharged from the case can achieve the effect of preventing the thermal runaway phenomenon occurring in the battery cell 110 and delaying the propagation of thermal runaway.
  • the case may be formed of a material that can be melted when a thermal runaway phenomenon occurs.
  • the fire extinguishing agent may be a liquid fire extinguishing agent and/or a generally used powder type fire extinguishing agent.
  • the fire extinguishing agent material may be a liquid fire extinguishing agent including a foam agent, sodium hydrogen carbonate (NaHCO 3 ), potassium hydrogen carbonate (KHCO 3 ), ammonium phosphate (NH 4 H 2 PO 3 ), and “ It may be any one of a mixture of potassium hydrogen carbonate (KHCO 3 ) and urea ((NH 2 ) 2 CO)”.
  • the fire extinguishing agent is not limited thereto, and any material that performs a fire extinguishing function can be used without limitation.
  • the fire extinguishing member 300 may have double-sided adhesiveness.
  • the case of the fire extinguishing member 300 may have double-sided adhesiveness. Therefore, as will be described later, it can serve to fix the first battery cell 110a and the second battery cell 110b formed on both sides of the fire extinguishing member 300 with the fire extinguishing member 300 as the center. .
  • the extinguishing member 300 may come into contact with the upper portion 200c of the module frame 200 and the lower portion 200a of the module frame 200 .
  • the thermally conductive resin layer 310 may be formed on the lower portion 200a of the module frame 200, the fire extinguishing member 300 may come into contact with the thermally conductive resin layer 310.
  • the fire extinguishing member 300 may be formed to surround a space between the first battery cell 110a and the second battery cell 110b, and between the first battery cell 110a and the second battery cell 110b. Since it may be formed to be interposed therebetween, the first battery cell 110a and the second battery cell 110b may be adhered to each other.
  • the extinguishing member 300 may be interposed between the side portion 200b of the module frame 200 and the outermost battery cell 110 . That is, the fire extinguishing member 300 may be formed to contact the side portion 200b of the module frame 200, and may also be formed to contact the side surface of the outermost battery cell 110. Therefore, the fire extinguishing member 300 may bond the outermost battery cell 110 included in the side portion 200b of the module frame 200 and the battery cell stack 120, and the battery cell stack 120 It can be fixed inside the module frame 200.
  • the fire extinguishing member 130 is located above or below the battery cell 110, and between adjacent battery cells 110 By being interposed, flames generated in the battery cell 110 can be effectively suppressed.
  • carbon dioxide and water vapor may be generated in the process of extinguishing the flame generated in the battery cell 110 by the extinguishing member 130.
  • This reaction is an endothermic reaction and can absorb heat from thermal runaway occurring in the battery cells 110 and can also block the supply of oxygen, effectively delaying flame and heat propagation between the battery cells 110 . Also, safety of the battery module 100 may be improved.
  • FIG. 5 is a view showing a battery module according to another embodiment of the present invention.
  • 6 is a perspective view showing a portion of a battery cell laminate included in the battery module of FIG. 5 .
  • the fire extinguishing member 300 may come into contact with an upper portion 200c of the module frame 200 and a lower portion 200a of the module frame 200 .
  • the thermally conductive resin layer 310 may be formed on the lower portion 200a of the module frame 200, the fire extinguishing member 300 may come into contact with the thermally conductive resin layer 310.
  • the fire extinguishing member 300 of this embodiment may contact the upper surface of the first battery cell 110a and the lower surface of the second battery cell 110b.
  • the fire extinguishing member 300 has double-sided adhesiveness as described above, so that the upper portion 200c of the module frame 200 and the upper surface of the first battery cell 110a are bonded, and the module frame 200 The lower part 200a and the lower surface of the second battery cell 110b may be bonded.
  • the fire extinguishing member 300 may be formed to surround a space between the first battery cell 110a and the second battery cell 110b, and between the first battery cell 110a and the second battery cell 110b. Since it may be formed to be interposed therebetween, the first battery cell 110a and the second battery cell 110b may be adhered to each other.
  • the battery cells 110 can be fixed, and the battery cell stack 120 formed by stacking a plurality of battery cells 110 can be fixed on the module frame 200 .
  • each of the battery cells 110 may be isolated through the extinguishing member 300 surrounding the battery cells 110 in a zigzag shape. Therefore, even if a thermal runaway phenomenon occurs in one battery cell 110 , the thermal runaway phenomenon can be suppressed through the fire extinguishing member 300 and propagation of the thermal runaway phenomenon can be delayed. In addition, by attaching and fixing the battery cell stack 120 and the battery cell 110 formed in the module frame 200, movement of the battery cell stack 120 and the battery cell 110 and damage caused thereby are minimized. Thus, the stability of the battery module can be improved.
  • a battery pack according to this embodiment includes the battery module described above.
  • the battery pack of the present invention may have a structure in which one or more battery modules according to the present embodiment are gathered and packed by adding a battery management system (BMS) that manages the temperature or voltage of the battery and a cooling device. there is.
  • BMS battery management system
  • the battery pack may be applied to various devices. These devices can be applied to means of transportation such as electric bicycles, electric vehicles, hybrid vehicles, etc., but the present invention is not limited thereto and can be applied to various devices capable of using a battery module, which also falls within the scope of the present invention. .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Un module de batterie selon un mode de réalisation de la présente invention comprend : un empilement d'éléments de batterie dans lequel une pluralité d'éléments de batterie sont empilés; un cadre de module destiné à entourer l'empilement d'éléments de batterie; et un élément d'extinction d'incendie interposé entre les éléments de batterie, les éléments de batterie comprenant des premier et second éléments de batterie qui sont voisins l'un de l'autre, et l'élément d'extinction d'incendie comprend, suivant une forme de zigzag, la surface supérieure du premier élément de batterie, l'espace entre le premier élément de batterie et le second élément de batterie, et la surface inférieure du second élément de batterie.
PCT/KR2022/014711 2021-11-03 2022-09-29 Module de batterie et batterie le comprenant WO2023080454A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023540605A JP2024502968A (ja) 2021-11-03 2022-09-29 電池モジュールおよびこれを含む電池パック
CN202280008859.XA CN116802903A (zh) 2021-11-03 2022-09-29 电池模块以及包括该电池模块的电池组
EP22890189.8A EP4246686A1 (fr) 2021-11-03 2022-09-29 Module de batterie et batterie le comprenant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0149626 2021-11-03
KR1020210149626A KR20230064246A (ko) 2021-11-03 2021-11-03 전지 모듈 및 이를 포함하는 전지 팩

Publications (1)

Publication Number Publication Date
WO2023080454A1 true WO2023080454A1 (fr) 2023-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/014711 WO2023080454A1 (fr) 2021-11-03 2022-09-29 Module de batterie et batterie le comprenant

Country Status (5)

Country Link
EP (1) EP4246686A1 (fr)
JP (1) JP2024502968A (fr)
KR (1) KR20230064246A (fr)
CN (1) CN116802903A (fr)
WO (1) WO2023080454A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190082974A (ko) * 2016-11-29 2019-07-10 베이징 키 파워 테크놀로지스 컴퍼니 리미티드 배터리 모듈의 흡열 및 단열 구조
KR20190094921A (ko) * 2018-02-06 2019-08-14 주식회사 엘지화학 배터리 모듈 및 이를 포함하는 배터리 팩
KR20200123122A (ko) * 2018-02-20 2020-10-28 세키스이가가쿠 고교가부시키가이샤 내화 적층체 및 배터리
KR20210096723A (ko) * 2020-01-28 2021-08-06 주식회사 엘지에너지솔루션 난연성 복합 패드, 그 제조 방법, 이러한 복합 패드를 포함하는 이차전지 모듈과 이차전지 팩
KR102303096B1 (ko) * 2021-01-22 2021-09-16 인선모터스 주식회사 배터리 소화용 매트 및 배터리 소화용 매트가 구비된 배터리 보관장치
KR20210149626A (ko) 2020-06-02 2021-12-09 주식회사 엘지에너지솔루션 배터리 서비스 제공 시스템 및 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190082974A (ko) * 2016-11-29 2019-07-10 베이징 키 파워 테크놀로지스 컴퍼니 리미티드 배터리 모듈의 흡열 및 단열 구조
KR20190094921A (ko) * 2018-02-06 2019-08-14 주식회사 엘지화학 배터리 모듈 및 이를 포함하는 배터리 팩
KR20200123122A (ko) * 2018-02-20 2020-10-28 세키스이가가쿠 고교가부시키가이샤 내화 적층체 및 배터리
KR20210096723A (ko) * 2020-01-28 2021-08-06 주식회사 엘지에너지솔루션 난연성 복합 패드, 그 제조 방법, 이러한 복합 패드를 포함하는 이차전지 모듈과 이차전지 팩
KR20210149626A (ko) 2020-06-02 2021-12-09 주식회사 엘지에너지솔루션 배터리 서비스 제공 시스템 및 방법
KR102303096B1 (ko) * 2021-01-22 2021-09-16 인선모터스 주식회사 배터리 소화용 매트 및 배터리 소화용 매트가 구비된 배터리 보관장치

Also Published As

Publication number Publication date
JP2024502968A (ja) 2024-01-24
KR20230064246A (ko) 2023-05-10
CN116802903A (zh) 2023-09-22
EP4246686A1 (fr) 2023-09-20

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